SOFTWARE ENGINEERING PROBLEMS

JUNE 2014 – PAPER III

17. Assume that a program will experience 200 failures in infinite time. It has now experienced 100 failures. The initial failure intensity was 20 failures/CPU hr. Then the current failure intensity will be
(A) 5 failures/CPU hr
(B) 10 failures/CPU hr.
(C) 20 failures/CPU hr
(D) 40 failures /CPU hr

Ans:- B
Explanation:- The formula for Current Failure Intensity =
Initial Failure intensity X [ 1 – Experienced failures/Failures in infinite time ]
= 20 X [ 1 – 100/200 ]
=20 X (100/200)
=10 failures /CPU hr

18. Consider a project with the following functional units :
Number of user inputs = 50
Number of user outputs = 40
Number of user enquiries = 35
Number of user files = 06
Number of external interfaces = 04
Assuming all complexity adjustment factors and weighing factors as average, the function points for the project will be
(A)135
(B)722
(C)675
(D)672

Ans:-
Explanation:-

Measurement parameter	Count	Weighting Factor(Average)	Total
Number of user inputs	50	4	=200
Number of user outputs	40	5	=200
Number of user enquiries	35	4	=140
Number of user files	6	10	=60
Number of external interfaces	4	7	=28

Functon point (FP) = count total X (0.65 + 0.01 X S(fi))
= 628 X (0.65 + .01 X 30)
= 596.6
There is no option like that given. So I am not choosing anything.

The weighting factors of Simple project are 3,4,3,7,5

The weighting factors of Complex project are 6,7,6,15,10

Formula for Function point (FP for Simple project)= count total X (0.65+0.01 X 22)

Formula for Function point (FP for Complex project)= count total X (0.65+0.01 X 44)

TRY OUT THE FOLLOWING PROBLEMS

1. Compute the function point value for a project with the following information domain characteristics
Number of user inputs : 23
Number of user output : 60
Number of user enquiries : 24
Number of files : 10
Number of external interface : 05
Assume that all complexity adjustment values are average.
Ans : - 591.85

2. Compute the function point value for a project with the following information domain characteristics.
Number of user inputs : 28
Number of user outputs : 50
Number of user enquiries : 42
Number of files : 07
Number of external interface : 03
Assume that all complexity adjustment values are simple.
Ans:- 412.38

Problems are taken from the book on Software Engineering by Bharat Bhushan Agarwal and Sumit Prakash Tayal